The Program Hosted by Eddie Sotelo Averaged More Than 3 Million Listeners

Univision Communications Inc. canceled one of Spanish-language radio's most popular talk shows, "Piolín por la Mañana," the company said, declining to offer an explanation.

The nationally syndicated morning show on Univision Radio was hosted by Eddie Sotelo, known as Piolín, Spanish for "Tweety Bird." The comic and sometimes-irreverent style of the show's Mexican-born host, who came to the U.S. as an illegal...